Cita APA (7a ed.)
Zafran, E. (Oct-Dec2010). When numbers meet letters. Key Words, 18(4), 117-120.
Cita Chicago Style (17a ed.)
Zafran, Enid. "When Numbers Meet Letters." Key Words 18, no. 4 (Oct-Dec2010): 117-120.
Cita MLA (9a ed.)
Zafran, Enid. "When Numbers Meet Letters." Key Words, vol. 18, no. 4, Oct-Dec2010, pp. 117-120.
Precaución: Estas citas no son 100% exactas.